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AlienVault OTX Vulnerabilities

AlienVault OTX Malware

GroupSession-Free-edition

GroupSession Free edition prior to ver5.3.0, GroupSession byCloud prior to ver5.3.3, and GroupSession ZION prior to ver5.3.2.do not validate origins in WebSockets. If a user accesses a crafted page, Chat information sent to the user may be exposed.

CVE-2025-61987 is a vulnerability identified in Japan Total System Co.,Ltd.'s GroupSession collaboration software, specifically in the Free edition prior to version 5.3.0, byCloud prior to 5.3.3, and ZION prior to 5.3.2. The root cause is the lack of origin validation in the WebSocket implementation used by these products. WebSockets are a protocol enabling persistent, full-duplex communication channels between clients and servers, commonly used for real-time chat applications. Without validating the origin header, the server cannot verify whether incoming WebSocket connection requests originate from trusted sources. An attacker can exploit this by hosting a crafted malicious webpage that initiates a WebSocket connection to the vulnerable GroupSession server. When a legitimate user visits this malicious page, the attacker may gain access to chat information transmitted over the WebSocket connection, leading to unauthorized disclosure of sensitive communication data. The vulnerability does not require any authentication or user interaction beyond visiting the malicious page, making it easier to exploit. The CVSS v3.0 base score is 5.3 (medium), reflecting network attack vector, low attack complexity, no privileges required, no user interaction, and impact limited to confidentiality loss only. There are no known exploits in the wild as of the published date. The vendor has released fixed versions (5.3.0 and later) that presumably implement proper origin validation to mitigate this issue.

Detailed information about CVE-2025-61987: Missing origin validation in WebSockets in Japan Total System Co.,Ltd. GroupSession Free edition affecting Japan Tota

CVE-2025-61987: Missing origin validation in WebSockets in Japan Total System Co.,Ltd. GroupSession Free edition - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2025-61987: Missing origin validation in WebSockets in Japan Total System Co.,Ltd. GroupSession Free edition

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